Tiedosto:Planck CMB.jpg

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"ESA's Space in Images contains images used throughout the ESA Portal. The images are offered in this website in the highest resolution available.

Most images have been released publicly from ESA. You may use ESA images or videos for educational or informational purposes. The publicly released ESA images may be reproduced without fee, on the following conditions:

Credit ESA as the source of the images.

Examples: Photo: ESA; Photo: ESA/Cluster; Image: ESA/NASA - SOHO/LASCO

ESA images may not be used to state or imply the endorsement by ESA or any ESA employee of a commercial product, process or service, or used in any other manner that might mislead.

If an image includes an identifiable person, using that image for commercial purposes may infringe that person‘s right of privacy, and separate permission should be obtained from the individual.

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If ESA images are to be used in advertising or any commercial promotion, layout and copy must be submitted to ESA beforehand for approval to: spaceinimages@esa.int"

fair use Tämä on tekijänoikeudella suojattu valokuva. Valokuvaa käytetään Wikipediassa Suomen tekijänoikeuslain sitaattioikeuden ja Yhdysvaltojen tekijänoikeuslain fair use -oikeuden nojalla rajoitetussa määrin tieteellisessä tai arvostelevassa tarkoituksessa tämän kuvan kriittisessä kommentoinnissa artikkelissa Kosminen taustasäteily.